Date: Tue Sep 19 2000 - 10:57:43 PDT
>i have a small doubt.
>in high frequencies why does the signal is confined
>only to the surface of the conductor?
>ie,(if i am putting it right)why does the current
>flows only at the surface of the conductor?
here is an informal plausibility explanation.
1. The only way to have current inside a conductor
is to have a non zero E field in there.
2. The only way to get an E field into a conductor is
to propagate it in from the outside.
3. High frequency EM fields are strongly attenuated
inside good conductors.
4. Net result, the only place in a conductor where
we can establish high frequency E fields and hence
high frequency currents is in the thin region
near the surface.
**** To unsubscribe from si-list or si-list-digest: send e-mail to
email@example.com. In the BODY of message put: UNSUBSCRIBE
si-list or UNSUBSCRIBE si-list-digest, for more help, put HELP.
si-list archives are accessible at http://www.qsl.net/wb6tpu
This archive was generated by hypermail 2b29 : Tue May 08 2001 - 14:29:32 PDT